2267

Material Data Sheet

Lactacystin

Price: $285.00
Catalog #: 2267

Lactacystin

Price: 
$265
Quantity: 
200 µg
Data Sheet: 

Potent, highly specific, irreversible and cell-permeable inhibitor that covalently modifies the catalytic β subunits (chymotrypsin-, trypsin- and caspase-like activities) of the proteasome. Lactacystin is hydrolyzed in aqueous solutions to a clasto-lactacystin β-lactone intermediate which is the active inhibitory species that reacts with the proteasome.

Product Information

FW: 
376.4
Structure: 
Purity: 
> 98% by HPLC. Structure confirmed by H-NMR.
Solubility: 
Soluble and stable in DMSO or MeCN up to 20 mg/ml. Pellet dry compound prior to DMSO addition. Subject to hydrolysis in aqueous buffers.
Activity: 

kobs/[I] = 4,000 M-1 s-1 vs. 20S:PA28 complex.
Inhibits ubiquitin proteasome pathway in cell culture (IC50=10 μM).

Storage: 
Store at -20°C. Avoid multiple freeze/thaw cycles.

Literature

References: 

Dick R.L., et al. (1996) J. Biol. Chem. 271:7273-7276
Dick R.L., et al. (1997) J. Biol. Chem. 272:182-188
Craiu A., et al. (1997) J. Biol. Chem. 272:13437-13445
Fenteany G. and Schreiber S.L. (1998) J. Biol. Chem. 273:8545-8548
Fenteany G et al. (1995) Science. 268:726-731
Masse C.E., et al. (2000) Eur. J. Org. Chem. 714:2513-2528